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首页> 外文期刊>Solid-State Electronics >Promotion of piezoelectric properties of lead zirconate titanate ceramics with (Zr,Ti) partially replaced by Nb_2O_5
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Promotion of piezoelectric properties of lead zirconate titanate ceramics with (Zr,Ti) partially replaced by Nb_2O_5

机译：用（Nb_2O_5）部分取代（Zr，Ti）的锆钛酸铅陶瓷的压电性能的提高

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摘要

This study investigated the correlation of sintering effects on piezoelectric properties of Nb modified lead zirconate titanate (PZT) piezoceramics produced by the conventional solid reaction sintering. Samples were prepared at a composition Zr/Ti = 53/47, contiguous to a morphotropic phase boundary (MPB) for 1 mol% Nb_2O_5. Replacement of Ti~(+4) by Nb~(+5) in such perovskite type solid solutions was accomplished by the creation of cation vacancies. These created vacancies seemed to facilitate material transport and benefit sintering. Calcined at 850℃/2 h and sintered at 1250℃/2 h, the PZT ceramics yielded a minimum value of the mechanical quality factor (Q_m) 50, and exhibited a maximum electromechanical coupling factor κ_p 0.62, in accordance with the relationship between the mechanical quality factor and electromechanical coupling factor. In addition, during the sintering process a piezoelectric charge constant at d_(33) was found to be of 385 pC/N. It was noted that the fundamental resonance frequency was around 200 kHz, which was suitable for piezoelectric nebulizer (fluid atomizer), ultrasonic cleaning transducer applications.
机译：这项研究调查了烧结效应与常规固相反应烧结生产的Nb改性锆钛酸铅（PZT）压电陶瓷的压电性能的相关性。制备的样品的组成为Zr / Ti = 53/47，与1 mol％Nb_2O_5的向晶相边界（MPB）相邻。在钙钛矿型固溶体中用Nb〜（+5）取代Ti〜（+4）是通过产生阳离子空位来实现的。这些空缺似乎促进了材料的运输并有利于烧结。 PZT陶瓷在850℃/ 2 h煅烧并在1250℃/ 2 h烧结，产生的机械品质因数（Q_m）最小值为50，并且最大电磁耦合系数κ_p0.62，这与PZT陶瓷之间的关系有关。机械品质因数和机电耦合因数。另外，在烧结过程中，发现d_（33）处的压电电荷常数为385 pC / N。值得注意的是，基本共振频率约为200 kHz，适用于压电雾化器（流体雾化器），超声清洗换能器应用。

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